, to use our power to establish a balance of power that protect the sovereignty of the ukraine from russia. ukraine needs to develop an ability to protect its own sovereignty. to the degree the united states can help, we should, but there are real limits to that. host: you are a graduate of princeton. that's what i want to bring up this piece. "getting into the ivs -- ivies." one of the stories this past week, 95% of stanford applicants were denied admission. they accept only at 5%. guest: it is mathematics. it is very hard to get into the schools. i'm very grateful i got into princeton and was able to go there. it was a great education, great professors. i met life on friends. it is a wonderful school. unlike some of those other ivy league schools, princeton is focused on educating undergraduates. i prized the ability to sit in -- you might be in a room the size, an office with someone who is a fantastic scholar, a great scholar, and be able to talk about things you read with that person. it is unfortunate there isn't more opportunity. but there are a lot of other great universities that